Household refrigerator



June 5, 1923. 1,457,950

A.L.UBERTO HOUSEHOLD REFRIGERATOR il an eet 1 IN VEN TOR.

June 5, 1923.

1,45 7,950 A. L. UBERTO HOUSEHOLD REFRI GERATOR Filed Jan. 24 1921 2 Sheets-Sheet 2 IN VEN TOR.

AT NEY.

Patented Tune 5, 122.3.

Application filed. January To all whom it may concern:

Be it known that ll, AMnoEo L. llisnnro, a citizen of the United States, residing at Uakland, in the county of Alameda, State of a California, have invented a new and useful Household Refrigerator, of which the following is a specification, in such full and clear terms as will enable those skilled in the art to construct and use the same.

This invention relates to a household refrigerator and its object is to reproduce, upon a scale suitable for household use, a refrigerator plant capable of carrying out its function automatically and without danger from escaping anunonia such as is commonly used in an ordinary refrigerator plant.

In the present invention ether or some other liquid, which is not dangerous to use, is used as the medium for removing the heat from the refrigerator and cooling it to the desired temperature.

Another object of the invention is to arrange the entire apparatus in the most con- 25 venient location in the refrigerator, while at the same time providing for the requisite cooling of the condensed liquid.

Another object of the invention is to provide means whereby the apparatus will 30 operate intermittently thereby giving the liquid in the container time to cool off.

Other objects of the invention will appear as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied to the same portion throughout, but ll am aware there may be modifications thereof.

Figure 1 is a vertical sectional view of the refrigerator.

Figure 2 is a sectional view of the refrigerator looking at right angles to Figure l on line 22.

Figure 3 is a sectional view of the end of one of the manifolds showing the nozzle for allowing the escape of the condensed liquid to the cooling coils.

In the drawings:

The numeral 1 indicates the bottom of the refrigerator, numerals 2 and 3 the ends of the refrigerator compartment, within which machinery is installed.

The-numeral 4 indicates the front of this compartment, and 5 indicates a door carried [by two hinges 6 and 7 through which the 1921. Serial no. 429,643.

machinery can be examined when necessary,

a latch 8 serving to hold this door closed.

Above the machinery compartment there is a refrigerator compartment having the outer wall 10 and inner wall 11, spaced from outer wall a suitable distance to insure insu lation. The inner Wallis spaced from outer wall by supports 12, in such numbers as is deemed necessary, and a door 13 is carried by suitable hinges 141- and 15 and has latch 16 to hold said door closed.

The cooling pipes are shown at 17 and they consist of a series of invertedtl pipes connected to the pipes 18 by means of unions 19. The pipes 18 are in turn connected to the manifolds 20 and 21. There are such a number of pipes 17 as experience determines is necessary to provide necessary expansion for a given size refrigerator.

Connected to the manifold 20 through a pipe 22 and check valve 23, is a pump 24. The check valve 23 opens towards the pump 24 so as to prevent the pressure in the cooling pipes 25 from acting on the pipes within the refrigerator.

A motor 26 is installed below the pump 24 and has a suitable belt 27 for operating the pump. The motor 26 is installed in front of cooling pipes 25 and it has a fan 28 which draws air through the holes 29 and below and across the motor 26 and cooling pipes 25 and out of motor chamber through holes 30 at the back of refrigerator.

The cooling pipes 25 discharges into a receiver 31 and said receiver is kept, normally, about one-half full of the liquid to be used as the cooling element.

At one end of the receiver 31 is a spring operated plunger 32, which bears upon valve arm 33, and which latter is connected by means of an insulated block 34 with the knife switch blade 35. The object being to open valve 36 when the pressure gets too great in the receiver 31 and to allow it to close and start the motor when the pressure runs down. A pipe 37 connects the bottom of the receiver 31 with valve 36 and a short nipple 38 connects the valve 36 with manifold 21.

The manifold 21 has its end closed by means of plug 39 and it has a perforated plate 40 therein provided with a plurality of minute openings. The object of which is to cause the fluid within receiver 31 to be discharged into the manifold with such (hillculty as to extract the largest amount of heat possible from refrigerator. In actual practice the manifolds 20 and 21 Will be suitably covered With a heat insulating ma terial.

The motor is driven from current supplied by two electric supply wires 41 and 4:2, and is regulated by means of supply Wire 43, Which extends to contact post 4 land receives current from Wire ll connected to contact post l". In order to move the refrigerator from place to place it is provided with Wheels 46.

The operation of follows:

Assuming the receiver 31 to have a suitable supply of ether placed therein, the pump 24 is expected to maintain a vacuum of about five to eight pounds in the cooling pipes Within the refrigerator. This will cause the ether to be discharged through the fine holes in the plate in the form of vapor, Which in due time is picked up by pump 24 and compressed sufficiently, say about forty to fifty pounds, to cause it to become liquid again.

As motor 26 is operated the fan 28 blows the air across the cooling pipes 25 and ab stracts from the ether the heat picked up in the refrigerator and appearing as heat in the condensed liquid. hen the pipes are substantially filled to the top with liquid it Will be forced over into the receiver 31, from the apparatus is as which point it Will be again be drawn out,

ee /nae through cooling pipes Within the refriger ator.

What I claim is as follows, but various modifications may be madein the construction shown in the drawings and above particularly described form, withinthe purview of my invention.

In a household refrigerator, the combination of a cooling compartment, an enclosure surrounding said cooling compartment, and spaced therefrom, a Working compartment below said cooling compartment, a liquid receiver in said Working compartment, a pipe leading from the bottom of said receiver to a. manifold, a valve in said pipe, a perforated plate in said manifold adjacent said pipe connection, cooling pipes leading from said manifold into said cooling compartment and returning to a second manifold, a pipe leading from the second manifold to a pump, and from said pump to a coil of cooling pipes connected to the top of said receiver, an electric motor, adapted to operate said pump and a fan simultaneously, air inlet and outlet openings in said Working compartment, an electric circuit connecting said motor, a switch in said circuit, and means for controlling said switch and said, valve simultaneously by the pressure in said receiver.

In testimony whereof I have hereunto set my hand this 14th day of January, A. l).

AMEDEU L. UBERTO. 

